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Classification of neural action potentials using mean shift clustering
conference contribution
posted on 2014-01-01, 00:00 authored by Thanh Thi NguyenThanh Thi Nguyen, Abbas KhosraviAbbas Khosravi, Imali HettiarachchiImali Hettiarachchi, Douglas CreightonDouglas Creighton, Saeid NahavandiUnderstanding neural functions requires the observation of the activities of single neurons that are represented via electrophysiological data. Processing and understanding these data are challenging problems in biomedical engineering. A microelectrode commonly records the activity of multiple neurons. Spike sorting is a process of classifying every single action potential (spike) to a particular neuron. This paper proposes a combination between diffusion maps (DM) and mean shift clustering method for spike sorting. DM is utilized to extract spike features, which are highly capable of discriminating different spike shapes. Mean shift clustering provides an automatic unsupervised clustering, which takes extracted features from DM as inputs. Experimental results show a noticeable dominance of the features extracted by DM compared to those selected by wavelet transformation (WT). Accordingly, the proposed integrated method is significantly superior to the popular existing combination of WT and superparamagnetic clustering regarding spike sorting accuracy.
History
Event
Systems, Man, and Cybernetics. Conference (2014 : San Diego, California)Pagination
1247 - 1252Publisher
IEEELocation
San Diego, CaliforniaPlace of publication
Piscataway, NJPublisher DOI
Start date
2014-10-05End date
2014-10-08ISBN-13
9781479938391Language
engPublication classification
E Conference publication; E1 Full written paper - refereedCopyright notice
2014, IEEEEditor/Contributor(s)
[Unknown]Title of proceedings
SMC 2014 : Proceedings of the 2014 IEEE International Conference on Systems, Man, and CyberneticsUsage metrics
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No categories selectedKeywords
Science & TechnologyTechnologyComputer Science, Artificial IntelligenceComputer Science, CyberneticsComputer Science, Information SystemsComputer Scienceneural action potentialsspike sortingdiffusion mapswavelet transformationsuperparamagnetic clusteringmean shift clusteringSPIKE DETECTIONRECORDINGS
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